← Search Econometrica Vol. 36 No. 3/4 1968 A Note on Optimal Tolls in an Imperfect Environment Maurice Marchand DOI10.2307/1909524 Volume36 Issue3/4 Pages575 Sources semanticscholar openalex crossref Cite APA 7 MLA 9 Chicago (author–date) Harvard Elsevier Harvard (JFE, JBF…) The Accounting Review Academy of Management American Marketing Association INFORMS (Management Science) Copy citation Copied ✓